May I ask how you found out?
The game never communicates these percentages in any form... and the difference between 70% resistance and 77% resistance is practically indistinguishable from a slightly better or slightly worse RNG roll.
Edit: 70%, not 60%, 85-15=70
But removing all numbers from descriptions of such items sounds like a good idea to me
Math still fails me lol, yes, 70, not 60.
In the description of Shepherd's Staff it says "Wielding Shepherd's Staff as a weapon reduces Cutting damage taken by 15% (to a min res. of 30%)". This doesn't say much, so I tested it out by stunning an enemy and then giving it a cutting damage weapon. I tried stacking (it's funny that stacking the staves stacks the morale penalty, but not the resistances - another bug?), and seeing what the maximum damage taken was. Needless to say, I was very disappointed to find out that the damage reduction was not what I expected it to be. In most other games resistances stack in more logical ways. Well, later I found out that the script writes the actual resistance in the savegame file, so you can just read it from there. Anyway, 15%, 8%, the difference isn't much, but it's enough to turn a "possibly useful weapon" into "garbage".
Yeah, removing all the numbers, including damage, from the descriptions of all items would be the best, right? Players should choose their favorite weapons based on feelings
Cutting resistance is pretty noticeable since melee tends to be many small attacks that will kill you if they do any damage. E.g. dogs won't hurt you at all in scale but can kill you in a single turn in warrior. (30 armor 80 cutting vs 30 armor 60 cutting)
Does wielding Shepherd's Staff help against dogs? It doesn't. Because the reduction is too small. So it's currently a useless item for this purpose. The purpose being, a swappable resistance item.